baber/WOPTO huggingface dataset:
Patent GB-857979-A (GB)
Title: Sound producer
IPC: G10H1/047
Filed: 1959-02-20
Abstract: 857,979. Electrophonic musical instruments. KARSTED, J. W., and SUMNER, I. F. Feb. 20, 1959, No. 5990/59. Class 88 (2). [Also in Group XXXIX] The output of an electrophonic instrument is divided between a treble loud-speaker 20 and a bass loud-speaker 36; the two loud-speakers are located in horizontally separated compartments 10 and 12 joined by a sound passage through an intermediate compartment 15, each loud-speaker compartment 10, 12 having also a sound outlet (not shown), and the treble loudspeaker 20 has a rotating horn 25 which sweeps past both the sound outlet of its compartment 10 and the entrance of the passage leading to the bass loud-speaker compartment 12. The rotating horn 25 produces a vibrato by means of the Doppler effect and also distributes the output of the treble loud-speaker between its direct outlet and the outlet of the bass loudspeaker compartment, the intermediate compartment 15 introducing reverberation. The bass loud-speaker 36 also has a rotating horn 40, the axes of rotation of the two horns 25 and 40 being mutually perpendicular.
Patent GB-1350188-A (GB)
Title: Friction drive
IPC: F16H15/30
Filed: 1972-02-09
Abstract: 1350188 Friction gearing A ZURCHER 9 Feb 1972 [18 Feb 1971] 6110/72 Heading F2D A steplessly variable friction drive comprises friction heads 20, 21 rigid on shafts 18a, 18b, arranged in an arc between friction rings 11, 12 connected through ball locking devices 13, 14 to input and output shafts 4, 6, respectively. The shafts 18a, 18b are connected to prevent relative rotation by pins 23 and are urged apart by a spring 22 to produce the frictional engagement between the heads 20, 21 and the rings 11, 12. A bearing sleeve 16 surrounds the shafts 18a, 18b, and has rings 15, 24 held thereon with an interposed spacer ring 25 by spring rings 25a. The ring 15 is supported in a bearing 10a of a disc 10 while the ring 24 is engaged by a slat 29 in a rotatable plate 30 of the adjustment mechanism while a guide slot 26 in a plate 27 supports the end of the bearing sleeve 16. Turning a wheel 37 acts through a rack and pinion 33, 34 to turn the plate 30 which by its slots 29 inclines the shafts 18a, 18b guided by the slots 26 to vary the transmission ratio over a large range to include a zero drive or with some arrangements a positive and negative drive.
Patent GB-1164872-A (GB)
Title: Improvements in or relating to a Type Block Carrier for a Typewriting Machine Lever
Inventor: SCHLACHTA KARL VON
IPC: B41J1/04
Filed: 1967-02-08
Abstract: 1,164,872. Typewriters. K. VON SCHLACHTA and H. BARUSCHKE, [trading as ALFRED RANSMAYER and ALBERT RODRIAN]. 8 Feb., 1967 [15 Feb., 1966], No. 6120/67. Heading B6F. A typewriter bar, having a bi-furcated head 11 which is formed by a carrier support 13 and a resilient spring arm 14 separated from each other by a slot 12, is provided with a detachably mounted type slug carrier 15, which is received slidably by the carrier support 13 and held in position by an abutment 16 on the carrier support 13 and an abutment 17 on the nose 18 of spring arm 14. The spring arm 14 is displaceable transversely relative to the longitudinal axis of the type bar to release the detachable type slug carrier 15. The type slug carrier 15 is formed by a pair of U-shaped members 19, 20, the latter being made from a sheet metal blank and bent around a forming wire 21 which is soldered to the sheet metal. The sheets of the member 20 are received within the channel defined by the ehanks of the member 19. The shanks of both members, which are bonded together by an adhesive, define a slot of rectangular configuration which corresponds to the configuration of the carrier support 13.
Patent GB-588960-A (GB)
Title: Improvements in and relating to the synthesis of oxazolones
IPC: C07D263/42
Filed: 1945-03-12
Abstract: Compounds of the general formula <FORM:0588960/IV/1> wherein R1 represents alkyl or aralkyl and R2 and R3 represent hydrogen, alkyl, aryl or aralkyl are obtained by treating an N-haloacyl-S-alkyl (or aralkyl-) cysteine with a lower fatty acid anhydride R.COOH, where R is an alkyl group containing not more than three carbon atoms and an organic tertiary base each being present in the proportion of at least three molecules per molecule of cysteine derivative.  In an example, N - phenylchloroacetyl - S - ethyl cysteine was added to dry pyridine in acetic anhydride to obtain 2 - benzyl - 4 - ethylthiomethylene - 5 - oxazolone.  Specification 587,735 is referred to.
Patent GB-1039081-A (GB)
Title: An improved electrical circuit breaker
IPC: H01H71/22
Filed: 1963-02-15
Abstract: 1,039,081. Automatic circuit breakers. S. SHIMODA. Feb. 15, 1963 [April 9, 1962], No. 6252/63. Heading H2B. An overload circuit breaker comprises a handle 2 which operates contacts 6, 7 through a cam 24 and which is held set by a permanent magnet 12 against a spring bias 19, the magnet 12 having a thermally demagnetizable polepiece 13 adjacent a heater 9 in series with the contacts so that on overload the force of magnet 12 on an armature 17 attached to the handle is overcome by the spring 19 to open the contacts. Ambient temperature compensation is provided by a bimetal spring support 60 and in the closed position an additional magnet 22 opposes spring 19. The temperature rise necessary to release the switch is progressively reduced for greater overloads by the electromagnetic effect of the loop-shaped heater 9 as explained in the Specification. In a modified arrangement (Fig. 3, not shown), magnet 22 is replaced by a spring-locking device 53 and a cam 71 is provided to hold handle 32 in an intermediate position after automatic release. The polepiece 13 may be of barium ferrite or of 29% nickel-steel and in the Specification details are given, graphically, of the variation of the magnetic properties of these and of an Alnico V magnet with temperature.
Patent GB-986938-A (GB)
Title: Vacuum-responsive device
IPC: A61L2/07
Filed: 1962-02-20
Abstract: 986,938. Sterilizers switching means. AMERICAN STERILIZER CO. Feb. 20, 1962 [Feb. 27, 1961; Sept. 13, 1961], No. 6491/62. Heading A5G. [Also in Division H2] The inlet of steam to a steam sterilizer is controlled by a vacuum switch (see Division H2) comprising a well 9 of continuously boiling water in which is mounted a thermal switch 13. Reduction of pressure above the liquid surface lowers its boiling temperature and at the desired vacuum operates the thermal switch which in turn controls the valve 6 allowing the inlet of steam to the chamber 1 only when the pressure has been reduced below 15-20 TORR. During each sterilizing cycle a small amount of steam condenses in a pipe 11 and runs into the well 9 to keep it filled with water.
Patent GB-1001627-A (GB)
Title: Improvements in and relating to the mounting of propellers in torque or torque andthrust transmitting connection with a tapered shaft
Inventor: BUNYAN THOMAS WALTER
IPC: F16D1/08
Filed: 1963-02-18
Abstract: 1,001,627. Securing propellers on shafts. P. & O. RESEARCH AND DEVELOPMENT CO. Ltd. Feb. 10, 1964 [Feb. 18, 1963; Feb. 26, 1963; March 4, 1963; May 15, 1963], Nos. 6540/63, 7681/63, 8491/63 and 19296/63. Heading F2U. [Also in Division B7] To reduce stress concentrations in a shaft 1 where a hub 2 of a ship's propeller is secured on the shaft, a sleeve 4 is either wedged on the tapered end of the shaft or shrunk thereon and the sleeve 4 is formed integrally with or positively connected to the hub 2 at one end so that a clearance 6 is provided between the hub 2 and sleeve 4 at the other end. As shown, the sleeve 4 is wedged on the shaft 1 and positively connected to the hub 2 by projections 5. Annular grooves 12 further reduce the stress concentrations in the shaft. A series of interconnected grooves 10 are connected to an opening 11 through which high pressure oil or grease can be supplied to the grooves 10 to expand the sleeve and facilitate removal of the hub. In Figs. 4 and 7 (not shown), the hub has radial projections which engage holes in the sleeve and the groove 12 are replaced by a series of holes. In Fig. 7, the clearance 6 may be filled with asbestos tape. In Fig. 5 (not shown), the hub 2 and sleeve 4 are positively connected by radial pins whilst in Fig. 6 (not shown), the hub and sleeve are integral. In Fig. 9 (not shown), the sleeve 4 is bolted to the hub 2. The hub 2 may be bronze and the sleeve 4 steel or other material with a similar coefficient of expansion to that of the steel shaft 1. A sealing ring may be provided between the hub 2 and shaft 1. In the Provisional Specifications the hub is supported on the sleeve at both ends.
Patent GB-1249118-A (GB)
Title: Polysiloxane coated fibres
Inventor: EVANS JOHN IDRIS
IPC: D06M15/643
Filed: 1968-02-09
Abstract: 1,249,118. Polysiloxane coated fibres. MIDLAND SILICONES Ltd. 10 Feb., 1969 [9 Feb., 1968], No. 6588/68. Heading D1P. A yarn or cord of rayon, nylon or polyethylene terephthalate at least partially coated with a lubricant of (1) a polydiorgano siloxane of the unit general formula wherein R is an organic radical, n has an average value of from 1.9 to 2.1 and from 0.5 to 15% of the total R substituents are R'NX 2  or R'Z or a mixture there of wherein X is H, alkyl or aryl, R' is a divalent hydrocarbon such that the NX 2  and/or Z group are separated from the silicon atom by at least three carbon atoms, and Z is a monovalent radical composed of C, H and N atoms which contains at least two amine groups and is attached to R' through a C-N linkage, at least 70% of the remaining R substituents being monovalent hydrocarbon radicals or (ii) an acid salt of the polydiorgano siloxane (i). In particular for rayon tyre cords both X substituents are hydrogen. The remainder of the R groups may be for example alkoxy, halogenated hydrocarbon carboxyalkyl or cyanoalkyl radicals, but are preferably monovalent hydrocarbon radicals. The lubricant (i) may be a copolymer of dimethyl siloxane units and units of R" R"' SiO wherein R" is a monovalent hydrocarbon radical and R"' is R'NX 2  and/or R'Z and in particular R"R"'SiO is methyl (aminopropyl) siloxane, methyl (N-#-amino ethyl-y-amino isobutyl) siloxane or methyl (N-#-aminoethyl- γ-aminopropyl) siloxane. The poly diorgano siloxane (i) or acid salt (ii) may have a viscosity of 1,000 to 100,000cs at 25‹C.
Patent GB-1415853-A (GB)
Title: Anti-oxidation coatings
IPC: B32B18/00
Filed: 1972-02-12
Abstract: 1415853 Coated products DUNLOP Ltd 5 Feb 1973 [12 Feb 1972] 6642/72 Heading B2E [Also in Division C4] A preformed carbon or graphite friction element is protected from oxidation by coating the article with a mixture of at least one boron-containing material and a carbonisable organic material and carbonising the organic material at an elevated temperature to form a binder which holds the boron-containing material in position on the surface of the article. The carbonisable material may be in the form of a solution, suspension or dispersion and suitable compounds for the binder are phenolformaldehyde resins, in solution in acetone or alcohol, urea-formaldehyde resins, cold tar (pitch) and certain hydrocarbons. The boron-containing material may be boron, boron oxide, boron carbide and various borides of chromium, zirconium, tantalum, titanium, and tungsten. The carbonisation of the binder may be carried out by a heat treatment process or by the use of the element at an elevated temperature.
Patent GB-880622-A (GB)
Title: Solid oxide catalysts and carriers
IPC: B01J21/00
Filed: 1959-02-26
Abstract: Contaminating ions are removed from a solid oxide catalyst or catalyst carrier which has been heated to at least 900 DEG  F. for at least one hour, by contact with an aqueous suspension of one or more solid cation or anion exchange materials, which process may be repeated if necessary.  Specified contaminants are: (a) cations containing Na, Fe, Ni or V; (b) anions-halide, nitrate, phosphate and sulphate.  The ion-exchange materials are those well-known in the art of ion-exchange.  The process of the invention which may be continuous or discontinuous may be applied to oxides contaminated either before or during their use as catalysts or carriers.  In examples, the solids treated are alumina and silica-alumina cracking catalyst, and the alumina may be used to prepare a platinum catalyst which is thereafter mixed with silica-alumina.  Solid oxides otherwise mentioned are magnesia and silica-magnesia.
Patent GB-125740-A (GB)
Title: Improvements in or relating to Electro Magnetic Switches.
IPC: H01H51/12
Filed: 1918-04-22
Abstract: 125,740. British Thomson - Houston Co.; and Hastings, H. C. April 22, 1918. E l e c t r o - magnetic switches.-A switch of the lock-out type used for starting electric motors has the contact arm c acted on by the closing- coil and a lock-out coil, the switch arm when moved from its normal open position by the lockout coil against the action of the sprinp g being practicallv out of the influence of the closing-coil, and when in its closed position being out of influence of the lock-out coil. The lock-out coil may be in two parts k, m, and the switches may be used in systems as described in Specification 125,732. When the lock-out magnet is energized, the coil m stresses the spring g and the coil k acts as a retaining-coil until the current therein falls to a certain value. The spring g then moves the arm c to the normal open position into the sole influence of the closing-coil which immediately attracts the arm.
Patent GB-512250-A (GB)
Title: Improvements in or relating to prime movers, pumps and compressors having rotary pistons
IPC: F01C1/32
Filed: 1938-03-04
Abstract: 512,250. Rotary engines. TUDA AKT.-GES. March 4, 1938, Nos. 6783 and 6784. Convention dates, March 6, 1937, and Jan. 20, 1938. [Class 110 (ii)] An engine, compressor, or pump comprises eccentric rotors 7, 4, coupled by vanes 49, and an outer fixed casing 1. An end plate 8 of the rotor 7 is keyed to a shaft 10, the other end plate 11 being mounted on a bearing 12 which is supported on a boss 5 extending from the outer casing. The rotor 4 is supported on bearings 16 mounted on a fixed spindle 15. Three spindles 21, carrying rollers 22, are secured to tne rotor 7. the rollers bearing on the bosses of circles 20 cut out of the rotor 4. The vanes 49 slide in slots 19 provided in swivel bearings 18, and extend axially into slots in the walls 8, 11. Oscillating cylinders 17 are mounted in the rotor 4 and carry the bearings 18. Working fluid (in the case of an engine) enters by way of conduits 27, 23 into chambers 46 ... 48, and is exhausted through further conduits 24, 27'. The inlet and outlet pipes contain expansible portions 28, 28<1>. A disc 25 is secured to the cover 11 and rubs against a disc 26" held by a member 26 which is pressed axially by springs 33, 34. Lubricant is supplied to the engine through a channel 35, and a further channel 36 periodically supplies the bearings 16 and passes the lubricant through radial ducts 38, 40, 41, 43, 49<1>, and the lubricant is discharged through a port 45. In a modified arrangement the vanes are solid and the members 17, 18 are replaced by three sleeves in each hole the bases of the sleeves being thicker than the lips which engage the vanes. Only two vanes are provided in this engine.
Patent GB-145117-A (GB)
Title: Composite element applicable to bearings, brake bands, laps and other articles and a method of making the same
IPC: F16C33/14
Filed: 1919-03-19
Abstract: 145,117. Goold, L. W., (Dann Products Co.). March 19, 1919. Incrustation and corrosion, preventing. - A metal plate is provided with a superficial layer of a different material by first forming a number of small depressions in the plate by rolling or otherwise in such a way that the bottoms of the depressions are consolidated and of increased density, and then filling the depressions with the desired material. As applied to a bearing surface the metal is formed with a large number of cavities a, Fig. 3, separated by ribs a<1> which are filled with a mixture of graphite and coal tar. The bearing is then bent into cylindrical form, if necessary, and baked in a bed of graphite to volatilize a part of the tar pressure being afterwards applied to compress the material in the cavities. Fig. 1 shows apparatus in which a metal strip A is indented by a roller B and passed through a bath of the filling-material heated by a burner F. On leaving the bath the strip passes between a scraper H and a presser I. The invention is applicable for treating boiler plates with graphite &c. to prevent incrustation.
Patent GB-212114-A (GB)
Title: An amusement apparatus
IPC: A63F7/06
Filed: 1923-03-09
Abstract: 212,114. Houldsworth, R. March 9, 1923. Table games.-In a game apparatus comprising a rotating table fitted with fixed goals at its centre into which balls are projected by model figures mounted on a. fixed surrounding part, the table 1, which is rotated by an electric motor 15, slopes to the circumference, where a groove 24 is formed. The figures 19 are operated through bell-crank levers engaged by shoulders on the stems of push-buttons 26, the engaged arms of the bell-cranks being provided with pivoted catches enabling the shoulders to trail past the bell-cranks on the upward or idle movement of the stems.
Patent GB-374132-A (GB)
Title: Improvements in electric discharge devices
IPC: H01J19/42
Filed: 1931-03-05
Abstract: 374,132. Discharge devices. STANDARD TELEPHONES & CABLES, Ltd., BEDFORD, L. H., and COVENEY, D. G., Connaught House, Aldwych, London. March 5, 1931, No. 6848. [Class 39 (i).] A flat supporting member A for the electrodes or the electrode supports B, C is shielded from conducting deposits by means of a flat parallel member A<1> having apertures large enough to admit the electrodes or their supports without touching the said member. The members A, A<1> may be spaced by rivets F, Fig. 3, or by channel-shaped metallic members around the edges. The member A<1> may be formed of insulating material or of metal and may be adapted to act as an electrostatic screen. The Provisional Specification states also that similar shields may be provided to prevent deposition on to the pinch.
Patent GB-678436-A (GB)
Title: Processes for the preparation and use of nickel catalysts
IPC: B01J23/755
Filed: 1951-03-22
Abstract: Nickel catalysts which are stable at 500 DEG -1000 DEG C are prepared by heat treating a solution of a nickel salt with an alkali silicate at a temperature above 60 DEG C to form a precipitate, the atom ratio of nickel to silicon being between 1:1 and 1:3, and continuing the heat treatment until at least half the precipitate formed consists of nickel montmorillonite Ni3(OH)2(Si2O5)2, separating and drying the precipitate, and reducing in hydrogen at a temperature above 425 DEG C, preferably 500 DEG -700 DEG C.  When the nickel/silicon atom ratio is 3:4 the precipitate consists mainly of nicked montmorillonite; with lower proportions of silicon, nickel antigorite Ni3(OH)4Si2O5 is also formed. Precipitation may be carried out at the boiling point of the mother liquor or at higher temperatures under pressure, and heating continued for 4-8 hours.  The catalysts may be used at above 500 DEG C in processes in which free hydrogen is formed, e.g. the reaction of methane with steam to form carbon monoxide and hydrogen, and the dehydrogenation of paraffin hydrocarbons to alkenes, and of ethyl benzene to styrene.  If the precipitate formed contains an excess of silicic acid it may be impregnated with an aluminium salt, or aluminium chloride may be introduced by sublimation; the resulting catalyst is then also useful in cracking, reforming, and hydroforming reactions.
Patent GB-1036966-A (GB)
Title: Fire extinguisher
IPC: A62C13/00
Filed: 1964-02-19
Abstract: Portable fire extinguishing apparatus comprises at least two independent pressurized fire extinguishing vessels with outlet valves which are both controlled by the same operating mechanism, the outlets being led to a common ejection nozzle.
Patent GB-1447369-A (GB)
Title: Apparatus for producing a fluid-in-liquid dispersion
IPC: B01F7/00
Filed: 1973-02-13
Abstract: 1447369 Mixing fluids JOHNSON & JOHNSON 13 May 1974 [13 Feb 1973] 7102/73 Heading B1C Apparatus for dispensing a fluid (gas or liquid) in a liquid especially for foaming a solvent-based adhesive, or forming oil-in-water or water-in-oil emulsions, comprises at least one blade having an aerofoil cross-section (as defined) truncated downstream of its thickest part to provide a rearward facing surface having at least one orifice smaller than a conduit within the blade through which fluid is supplied. In the embodiment of Fig. 2 a stationary blade 5 is fixed across a conduit carrying a liquid flow fluid being supplied by conduit 12 to narrower passages or orifices 14. There may be several such blades in staggered array. In another embodiment, Fig. 4, for batch or continuous operation, there may be a plurality of blades 5 arranged as a rotor detachably mounted on a hollow shaft 9 through which the fluid is supplied, and operating within a container preferably cylindrical in the region of the rotor and closely conforming to it in diameter. In any embodiment there may be arrangements to cause fluid to issue from the orifices at different rates from blade to blade, the blade may vary in camber or pitch along the blade; there may be vanes or baffles to guide flow or prevent turbulence. The orifices may be shaped; the fluid supply may be at, above or below, atmospheric pressure. The size of the bubbles or droplets may be altered by varying the rate of rotation of a rotor, the size of the orifices and the viscosity of the liquid.
Patent GB-448493-A (GB)
Title: Improvements in or relating to rails having end tread surface areas hardened by heat treatment
IPC: E01B5/02
Filed: 1934-08-27
Abstract: 448,493. Hardening railway rail ends. OXWELD RAILROAD SERVICE CO., 230, North Michigan Boulevard, Chicago, U.S.A.-(Assignees of George, H. S.) Aug. 27, 1934, No. 7051/36. Convention date, Sept. 6, 1933. Divided out of 448,416, [Group II]. [Class 104 (ii)] The tread surfaces 10 at the ends of rails are hardened by heat treatment over an area extending from the ends of the rails to an approximately diagonal line 15 so that rolling stock will not pass abruptly from a hardened area to an unhardened one, or vice versa. The heat-treatment may be effected by the apparatus described in Specification 448,416.